US Bridges

Kishwaukee RD over Kishwaukee River

Fair

Winnebago County, Illinois · 1.5 MI SW Belt Line · Structure no. 101310000000000

Built
2011
14 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
461 ft
3 main spans
Daily traffic
4,850
2022 count
Owner
County
County Highway Agency

About this bridge

Kishwaukee RD over Kishwaukee River is a steel continuous stringer/multi-beam or girder carrying Kishwaukee RD over Kishwaukee River in Winnebago County, Illinois. It was built in 2011, so it is 14 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 4,850 vehicles a day, roughly 5% of them trucks, projected to reach 5,151 by 2046. The structure is 461 ft (140.4 m) long and 44 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesKishwaukee RD
CrossesKishwaukee River
Location1.5 MI SW Belt Line
CountyWinnebago County
StateIllinois
Coordinates42.18513, -89.13056
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.4 US tons
Inventory rating51.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length461 ft (140.4 m)
Longest span174 ft (53 m)
Deck width44 ft (13.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,850 (2022)
Projected traffic5,151 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Kishwaukee RD over Kishwaukee River built?

It was built in 2011, making it 14 years old in 2025.

What condition is Kishwaukee RD over Kishwaukee River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.

How much traffic does Kishwaukee RD over Kishwaukee River carry?

About 4,850 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Kishwaukee RD over Kishwaukee River?

The structure is 461 ft (140.4 m) long with a longest span of 174 ft (53 m) and a deck 44 ft wide.

Who owns Kishwaukee RD over Kishwaukee River?

It is owned by the County Highway Agency.